Met Éireann has indicted that grim weather warnings "can't be ruled out" later this month as the warm weather passes and is replaced by brutal conditions.
While the country basks in 29C heat this week the national forecaster is predicting a big change in the weather as the month progresses and high pressure is gazumped by a low pressure system.
In its monthly forecast looking ahead to the beginning of September, Met Éireann expects the arrival of horrendous conditions, particularly from August 19 onwards.
Read More : Exact date Ireland's heatwave will end with thunderstorms to lash the country
Before then, however, warm weather will continue right into the weekend. In its latest forecast, Met Éireann said "high pressure will dominate the weather picture" until the end of the week, adding, "each day will be dry, warm and sunny with light winds. Sea breezes will form in the afternoons for a couple of hours. Nights will be dry and clear.
"Friday and Saturday will be hot and sunny with a low chance of isolated showers. Highest temperatures of 25 to 28 or 29 degrees in light variable breezes, hottest inland. Staying warm overnight with temperatures not falling below the mid to high teens."
They predict "another hot day on Sunday with sunshine to start" but warn that "there's an increased likelihood of showers, and they could be heavy. Temperatures 25 to 29 degrees with light easterly breezes.
"Current indications suggest that temperatures will fall back closer to average for the time of year from next Monday with low pressure taking over and bringing showers," they said but it's beyond next week the weather could turn really nasty.
"Next week Ireland will lie between high and low pressure generally, with low pressure to the southeast steering up generally above average temperatures, and while this scenario can traditionally produce some thundery downpours, it will remain drier than average especially in the west of the country," Met Éireann's monthly forecast says.
"Potential hazards include heavy showers or thunderstorms at times, and while temperatures will remain above average generally, heat related warning generally do not look likely at this time."
From August 19 to 25, they say that "low pressure predominantly to the north of Ireland will steer in a fresher northwesterly wind with temperatures returning to average and slightly above average rainfall expected through the period.
"While rainfall amounts will increase, currently there is low confidence in this posing a hazard through week 2, but warnings can’t be ruled out," they added.
For the last week in August, some high pressure could return with Met Eireann marginally confident of a return to drier conditions.
"Elsewhere temperatures will remain near average for the time of year. The settled pattern for week 3 looks to reduce the potential for hazards at this time."
However, the first week of September could bring the summer to a crashing end with Met Éireann expecting a "transition period with low pressure returning to the west of Ireland."
"This will steer up some slighter above average temperatures, however rainfall will mostly be close to average across the country. Generally conditions are forecast to remain benign and the potential for hazards currently looks to remain low," they concluded.
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